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Studies on nitric oxide removal in simulated gas compositions under plasma-dielectric/catalytic discharges

Rajanikanth, BS and Rout, Satyabrata (2001) Studies on nitric oxide removal in simulated gas compositions under plasma-dielectric/catalytic discharges. In: Fuel Processing Technology, 74 (3). pp. 177-195.

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Abstract

Application of pulsed electrical discharges for gas cleaning is gaining prominence, mainly from the energy consideration point of view. This present paper presents recent work on applying the electrical discharge plasma technology for treating gaseous pollutants, in general, and nitric oxide, in particular, as this is one of the major contributors to air pollution. The present work focuses attention on pulsed electrical discharge technique for nitric oxide removal from simulated gas compositions and study of effect of packed dielectric pellets, with and without a coating of catalyst, on the removal process. Experiments were conducted in a cylindrical corona reactor energized by repetitive high voltage pulses. The effects of various parameters, viz. pulse voltage magnitude, pulse frequency, initial nitric oxide concentration and gas mixture composition on nitric oxide removal efficiency, are discussed. When the reactors were filled with different dielectric pellets like, barium titanate, alumina, and alumina coated with palladium catalyst, the improvement in nitric oxide removal efficiency is studied and discussed. The power dissipated in the reactor and the energy consumed per nitric oxide molecule removed was calculated. Further results and comparative study of various cases are presented in the paper.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier.
Keywords: Non-thermal plasma;Pulsed discharge;Dielectric discharge;NO removal;Catalytic discharge;Gas cleaning;Packed dielectrics
Department/Centre: Division of Electrical Sciences > High Voltage Engineering (merged with EE)
Date Deposited: 30 Nov 2007
Last Modified: 19 Sep 2010 04:36
URI: http://eprints.iisc.ernet.in/id/eprint/10486

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